Abstract: A method and a terminal for acquiring information on the media supported by an emergency center to provide the terminal with the emergency call service using non-voice media as well voice media are provided. A method includes receiving information on media supported by an Internet Protocol (IP) Multimedia Subsystem (IMS) from a server, storing the information on the media supported by the IMS, and transmitting a signal to a Public Safety Answering Point (PSAP) based on the information on the media supported by the IMS and the terminal. The emergency call processing method of the present invention allows only the terminal capable of NOVES to perform the media information acquisition procedure, thereby avoiding overhead caused by media acquisition attempts of a large number of terminal.

Abstract: An access control device may include logic configured to receive a request from a user device to set up a packet connection for an emergency session to a packet data network via an access network. The logic may be further configured to determine a location associated with the user device; identify a public safety answering point associated with the determined location; determine whether a connection capacity associated with the identified public safety answering point has been reached; and reject the request to set up the packet connection for the emergency session, in response to determining that the connection capacity associated with the identified public safety answering point has been reached.

Abstract: The present invention relates to a security control method and device for emergency calls in a mobile communication system, and the security control method in a mobile communication system supporting emergency calls according to an embodiment of the present invention comprises: a step in which a terminal transmits a message containing terminal security capabilities to a source network during handover in an emergency call; a step in which a mobility manager of the source network transmits, to a mobility manager of a target network, the message containing terminal security capabilities; a step in which the mobility manager of the target network transmits, to a base station of the target network, a hand-over request message containing the terminal security capabilities; and a step in which, after the hand-over preparation procedure has been completed, a base station of the source network transmits, to the terminal, a hand-over command message containing the terminal security capabilities.

Abstract: A communication device and base station configured to perform random access procedures utilizing, for example, Long-term Evolution (LTE). For example, the random access procedures can be performed for emergency calls. The base station can be configured to allocate one or more preambles to a group of preambles that are designated for emergency calls. The communication device can be configured to transmit random access preambles at a maximum transmission power and ramp down the transmission power for subsequent transmissions. The communication device can be configured to initiate a second random access procedure and determine whether to continue with the second random access procedure or the first random access procedure while aborting the other.

Abstract: A method of detecting a transmitting device within an obstruction rich environment is disclosed. The method may involve detecting the transmitting device with a wireless transmission detection facility; communicating signal information relating to the detected transmitting device from the wireless transmission detection facility to a central unit; determining the location of the transmitting device; displaying information of the detection and location of the transmitting device through a user interface; and providing an action facility for causing actions related to the detected transmitting device.

Abstract: A network device may be configured to provide a gateway between a remote host and a mobile node using multiple interconnection protocols. The network device may include database circuitry configured to query a database for a first or second address of a mobile node using a domain name of the mobile node. The addresses may be associated with different interconnection protocols. The network device may include communication interface circuitry configured to receive a request from a remote host to communicate with the mobile node. The request may include the domain name. The interface circuitry may also be configured to transmit a message indicating the request using the first address, and transmit the second address to the remote host so that the remote host can communicate with the mobile node using the second address. The message may include a command to establish a data bearer through the second address.

Abstract: Novel adaptive silencing schemes for device-to-device (D2D) discovery based on loading conditions in a discovery zone are disclosed herein. These adaptive silencing schemes can be used to mitigate interference and data collisions in networks where D2D connections can be formed. In some embodiments, a silencing factor is used to probabilistically determine whether a user equipment (UE) will transmit one or more D2D discovery signals in the discovery zone. Loading conditions in a current discovery zone can be estimated using several different approaches and metrics described herein. The silencing factor can be increased or decreased for a subsequent discovery zone based on the values of one or more of the metrics described herein for the current discovery zone.

Abstract: Provided is a method of generating a Device-to-Device Synchronization Signal (D2DSS) by a terminal according to an embodiment of the present disclosure. The method includes determining a service attribute for identifying whether the terminal is serviced by at least one base station; and generating a D2DSS for identifying whether the terminal is serviced by the base station, based on the determination result. In addition, provided is a method of configuring D2D synchronization by a terminal according to an embodiment of the present disclosure. The method includes receiving a signal from at least one base station or another device; determining whether a synchronization signal is detected from the received signal; and when the synchronization signal is detected, configuring synchronization with the another device based on the timing reference of the detected synchronization signal.

Abstract: Example embodiments presented herein are directed towards a Mobility Management Entity (MME) and a Visitor Location Register (VLR) node, as well as corresponding methods therein, for monitoring a VLR node registration of a wireless device The MME is currently serving.

Abstract: The present invention discloses a method for processing USSD service. In this method, when an application server determines that a mobile terminal on a VoLTE network supports USSD operations over IMS, the application server sends an invite message to the mobile terminal, where the invite message includes an identifier of a USSD service; receives an invite response from the mobile terminal, where the invite response carries reply information entered by a subscriber and the identifier of the USSD service; generates, according to the reply information, a message that requests to execute the USSD service, where the message that requests to execute the USSD service carries the identifier of the USSD service; and sends, to a subscriber data server, the message that requests to execute the USSD service, so that the subscriber data server processes the USSD service.

Abstract: This inventions relates to an identity suspension method and system for a mobile device designed for operation with a subscriber identification module (SIM) card, wherein the mobile device further includes a virtual SIM device. The virtual SIM device acts as a bridge between a remotely located SIM card, and the mobile device. The virtual SIM device can detect when the mobile device requests an identity or when the cellular services provider is attempting to authenticate the identity associated with the mobile device. Should the virtual SIM device sense that the process may not be completed for any reason, the virtual SIM device returns a transient error to the mobile device and effectively present a new “parking” identity to the mobile device using procedures defined in SIM toolkit.

Abstract: A method of supporting enhanced SIM replacement procedure is proposed. A UE detects that a first identification module running a first application is inserted. The first identification module belongs to a PLMN, and an enhanced service is provided by an operator of the PLMN via a second application. The UE sends a notification to the operator for obtaining a second identification module. The UE detects that the second identification module running the second application is inserted. The UE sends a second notification to the operator for activating the second identification module such that the UE is able to use the enhanced service provided by the operator. The device-assisted solution for SIM replacement complies with existing security/authentication model, has no standard charge, and complies with existing SIM replacement model and offers a simpler and more automatic procedure.

Abstract: A remote system allows a user terminal to execute a program other than those preliminarily stored in the user terminal through remote operation of the user terminal even if a user who receives remote operation cannot operate the user terminal. In the remote system 1 composed of the user terminal 10 to be remotely operated and a remote server 100, the user terminal 10 receives a remote message through a public line network 3 and accesses a destination remote server 100 written in the remote message, regardless of operation input from a user. The user terminal 10 executes a program read out from the accessed remote server, regardless of operation input from a user.

Abstract: A method and system for managing awareness information relating to a mobile device's visibility with respect to other buddy devices, the system comprising; the mobile device, a mobile application listing one or more buddies, an application listener which tracks the one or more buddies zoom operations and radar zoom factors, and a server, the server comprising an encounter manager, an approach manager and a notification marshalling system.

Abstract: Devices, systems, and non-transitory computer-readable storage media for updating wireless device credentials, the wireless device comprising: a user interface, memory configured to store one or more credentials for enabling the wireless device to obtain one or more services over a wireless access network, and one or more processors configured to execute one or more machine-executable instructions that, when executed by the one or more processors, cause the one or more processors to obtain an indication of a user request to replace a particular credential with a target credential, detect a network-provisioning state change, determine that the particular credential does not match the target credential, initiate a programming session with a network element over a wireless access network, obtain an updated credential from the network element, and assist in storing the updated credential in memory.

Abstract: A signal may be emitted by an emitter or transducer. The signal may be sensed by a sensor, such as an accelerometer. Features of a body part or portion may be one of detected, extracted, or constructed from the sensed signal. It may be determined whether the body part or portion matches that of a user, such as an authorized user, based on the features.

Abstract: A wireless authentication system includes an execution end device and a control end device. When the execution end device and the control end device receive an activation signal, the execution end device generates a time related random code, and transmits the time related random code to the control end device; and the control end device generates a comparison authentication code according to the time related random code, a fixed password and a variable password. When the execution end device determines that the comparison authentication code corresponds to a set of data stored in the execution end device, the execution end device performs a predetermined operation, and the variable password is changed.

Abstract: A short-range wireless network is established by direct communication between wireless devices and wireless access points. A wireless communication device provides initial registration information to a network and becomes a registered device. An API is downloaded to the wireless device to permit automatic authentication of the device for future communications. When a registered device enters a venue, at least one access point will automatically detect the wireless device and extract the necessary identification data to permit authentication of the device. Customized messages may be provided to the wireless device. If the wireless device enters a different venue, even in another city or state, the registration data may be automatically extracted by an AP and provided to a cloud network for authentication. Authenticated devices receive a list of authenticated vendors and unauthenticated vendors near the present location of the authenticated device.

Abstract: To provide more secure access to a conference call, a request is received from a user to retrieve a one-time conference passcode; the request includes a personal verification code. In one embodiment, the personal verification code is a digital certificate. The personal verification code is validated. In response to the personal verification code being valid, the user is sent the one-time conference passcode. The user then requests to join the conference call by presenting the one-time conference passcode and a participant code. The one-time conference passcode and the participant code are verified. In response to verifying the one-time conference passcode and the participant code, the user is allowed to join the conference call. The user's name is then displayed in a list of conference participants. This overcomes the security problem of not knowing exactly who is participating in the conference call.

Abstract: Systems and methods for verifying physical proximity to a network device are provided. The method includes acquiring a tag identifier from a tag fixed in, on, or proximal to a network device, using a computing device. The tag is configured to be read and written to by electronic communication with the computing device, when the computing device is disposed in proximity to the tag. The method further includes transmitting data indicative of the tag identifier to a server, and receiving an authorization confirmation from the server. The method also includes rewriting the tag so as to replace the tag identifier with a new tag identifier, using the computing device, and performing one or more operations with the network device after receiving the authorization.

Abstract: A telecommunications network including: a mobile device (10); a home network (12) with which the mobile device (10) user has a subscription including content preferences, the home network (12) including a content preference store (94) for storing the content preferences, a policy provisioning server (9) for indicating content preferences to mobile device (10) and home authenticating means (13) for performing authentication of the mobile device (10); and a further network (38) having at least one access point (11) with which the mobile device (10) can temporarily communicate and further authenticating means (42) for controlling registration of the mobile device (10) with the access point (11); wherein: the further authentication means (42) is operable to communicate with the home authentication means (12) to perform an authentication process for the mobile device (10) when the mobile device (10) connects to the access point (11), which authentication process accesses data from the content preference store (94)

Abstract: Systems, apparatuses, and methods for cooperative security in wireless sensor networks are described herein. A wireless node may organize itself into a cluster with other wireless nodes. The wireless node may cooperate with other wireless nodes in the cluster to select a leader node. The wireless node may describe its expected behaviors. The wireless node may detect a compromised wireless node within the cluster. The wireless node may prevent the compromised wireless node from compromising another wireless node.

Abstract: Methods and systems are provided for changing mobile-station settings upon a mobile station handing off to a base station. In an embodiment, a base station makes a first determination that at least one of several enumerated events has occurred, and in response to making the first determination, carries out one or more of several enumerated steps. Among the several enumerated events are (i) a mobile station handing off to the base station, and (ii) the mobile station initiating a call to a voicemail system maintaining a voicemail account associated with the mobile station; and among the several enumerated steps are (i) disabling a password requirement for the voicemail account, (ii) conveying a voicemail password to the voicemail system on behalf of the mobile station, and (iii) configuring the mobile station to convey the voicemail password to the voicemail system upon the mobile station establishing a call to the voicemail system.

Abstract: A method and system for virtualization of access points are disclosed. According to certain embodiments, access points at virtual private networks can act as soft VPN gateways.

Abstract: Certain aspects of the present disclosure relate to techniques for supporting television white space (TVWS) communication. In an aspect of the present disclosure, a low-rate TVWS enabler (Mode II wireless communication device) may provide initial enablement for all Mode I devices (e.g., access points and user terminals), as well as it may transmit a contact verification signal (CVS) on a regular basis to keep the Mode I devices enabled for the TVWS communication.

Abstract: A medical system comprises: a medical body area network (MB AN) system (10) comprising a plurality of network nodes (12, 14) intercommunicating via short range wireless communication, the MBAN system (10) including a spectrum control sub-module (52) that selects an operating channel or frequency for the short range wireless communication; and a radio frequency identification (RFID) tag (60) disposed with the MBAN system. The spectrum control sub-module selects an operating channel or frequency from a spectrum comprising a combination of (1) a default spectrum and (2) a restricted spectrum authorized for use by the MBAN system conditional upon the MBAN system being within a medical facility as indicated by readings of the RFID tag. The spectrum control sub-module selects an operating channel or frequency from a spectrum comprising only the default spectrum conditional upon the MBAN system not being within the medical facility as indicated by readings of the RFID tag.

Abstract: A technique including selecting as a coordinating entity one entity from a plurality of radio access network entities each capable of both coordinating a multi-cell transmission and following the coordination by another entity of a multi-cell transmission; deciding at said selected radio access network entity on physical parameters for a multi-cell transmission; and distributing physical parameter information about said multi-cell transmission from said coordinating entity to others of said plurality of radio access network entities.

Abstract: Disclosed is a wireless communication system using white spaces and a base station that does not have its own backhaul, starts wireless communications without radiating radio waves of frequencies causing interference with primary users. A BS being in isolation starts a wireless communication with a CPE, connected to the internet, so as to access a database to acquire a list of frequencies available for transmission. The BS uses a predetermined frequency to perform the wireless communication with the CPE, and acquires, via this wireless communication, the list of frequencies available for transmission. Thereafter, the BS performs wireless communications with the CPE and with another CPE on the basis of the acquired list of frequencies available for transmission. The BS can hold, in advance, information of the predetermined frequency for which it has been estimated that the BS will cause no interference with the wireless communications of the primary users.

Abstract: A method includes displaying an image associated with a site at which a wireless network is to be installed or modified. The method also includes identifying positions of multiple wireless devices within the image. Different ones of the wireless devices are configured to support different wireless protocols, and the wireless devices and their positions form at least part of a design of the wireless network. The method further includes displaying, within the image, at least one of: (i) estimated wireless coverage areas of the wireless devices, (ii) estimated wireless connectivity between the wireless devices, and (iii) estimated communication routes between the wireless devices. In addition, the method includes validating the design of the wireless network against one or more network criteria using at least one of the estimated wireless coverage areas, the estimated wireless connectivity, and the estimated communication routes.

Abstract: One embodiment provides a system for suggesting placement of beacons within a venue. The system performs operations including receiving a floor plan for a venue, receiving user-specified input identifying a defined area within the floor plan to target, and determining an arrangement of beacons for providing beacon coverage for the defined area. A total number of beacons to include within the defined area is determined. For each beacon, a corresponding location within the defined area to position the beacon at is also determined. The arrangement of beacons is determined based on historical location data for the venue, user-specified preferences for the venue, signal strength of the beacons, and available power levels for the beacons.

Abstract: For controlling aggregation of cells (101, 111, 112, 113, 114, 115, 116, 201, 211, 212, 213, 214, 215, 216) of a mobile network, a network management device (300) determines a traffic load of a cell (101, 111, 112, 113, 114, 115, 116, 201, 211, 212, 213 214, 215, 216) of the mobile network. Further, the network management device (300) determines a rate of handovers between the cell (101, 111, 112, 113, 114, 115, 116, 201, 211, 212, 213, 214, 215, 216) and at least one further cell (101, 111, 112, 113, 114, 115, 116, 201, 211, 212, 213, 214, 215, 216) of the mobile network. On the basis of the traffic load and the rate of handovers, the network management device (300) controls aggregation of the cell (101, 111, 112, 113.114, 115, 116, 201, 211, 212, 213, 214, 215, 216) and the at least one further cell (101, 111, 112, 113, 114, 115, 116, 201, 211, 212, 213, 214, 215, 216) to an aggregated cell.

Abstract: Systems and methods are described for coordinating interference mitigation techniques and beamforming. Information about transmissions made by at least one access node neighboring a first access node is obtained. Further, profile data for a wireless device within a transmission range of the first access node is obtained. The systems and methods contemplate determining that transmissions from the first access node to the wireless device will utilize beamforming, based upon the profile data for the wireless device. The first access node is instructed to schedule wireless transmissions to the wireless device utilizing beamforming, based upon the determination to use beamforming.

Abstract: A first transmission controller (13) causes a second base station (7) to transmit first configuration information (CFG1) regarding a first cell (11) using a radio channel capable of being received by at least one first base station (1). A second transmission controller (14) selects a base station from among the at least one first base station (1), and transmits second configuration information (CFG2) regarding the first cell (11) to the selected base station from a higher-level network (15) via an access line (16).

Abstract: Systems, methods, and computer-readable media for optimizing coverage for a cell site are provided. Cell sites are typically configured with antennas that emit a standard petal lobe pattern for a sector. The needs of the sector are not taken into account since a standard pattern is emitted for all antennas. The antennas may be adjusted at times to increase signal strength to particular regions but the pattern then returns to the standard petal pattern. Customized patterns may be created in order to optimize coverage for a sector. Sector needs may be taken into consideration such as object interference, geographical information, population data, and the like, in order to crate the customized pattern for a sector. The antenna may then emit the customized pattern for a predetermined length of time as a static pattern for that cell site.

Abstract: Directive gain antenna elements implemented with an aperture-fed patch array antenna assembly are described. A feed network for the aperture-fed patch array may include offset apertures and may also include meandering feed lines. Scalable aperture shapes and orientations that can be used with antennas operating at any frequency and with dual orthogonal polarizations are also disclosed. Directive gain antenna elements implemented with arrays of orthogonal reflected dipoles are also described with optimal feed networks and parasitic elements to achieve desired directive gain characteristics. Such arrayed dipole antennas feature dual orthogonal polarizations with assembly tabs that lower cost and improve reliability. Backhaul radios that incorporate said antennas are also disclosed.

Abstract: Embodiments herein relate to a method in a mobile terminal for requesting access to a wireless communication system. The mobile terminal receives broadcasted system information directly indicating first access request preambles for a first contention based channel, and indirectly indicating second access request preambles for a second contention based channel based on the directly indicated first access request preambles. The mobile terminal further derives the second access request preambles from the first access request preambles. Additionally, the mobile terminal requests access using the second access request preambles or the first access request preambles to access the wireless communication system.

Abstract: A method, an apparatus and a system for data transmission are provided. The method includes: receiving processed first microwave data information that is received through a microwave antenna; performing multiplexing through a preset rule on the first microwave data information and processed first radio frequency data information that is received through a base station antenna, and sending multiplexed information to a baseband unit, so that the baseband unit sends the first microwave data information to a microwave indoor unit. In the method, the apparatus and the system for data transmission, microwave data information and radio frequency data information are multiplexed, and then multiplexed information is transmitted together.

Abstract: A method includes acquiring a global handover performance parameter R, a local handover performance parameter r, and a handover parameter of a cell within a preset time; and detecting a handover problem, existing within the preset time, of the cell according to R and r. The method further includes receiving Rj, rj, a handover parameter, and indication information for a handover problem, within the preset time, of each adjacent cell that are sent by all adjacent cells; and determining whether the cell is a cell to be optimized. If an ith cell is a cell to be optimized, the method optimizes, according to Ri, ri, Rj, and rj, a handover parameter of the ith cell, and the handover parameters of the adjacent cells of the ith cell by using a data statistical regression method, a handover parameter corresponding to a handover problem of the ith cell.

Abstract: Provided are a method, device and UE for sending indication information, and a method and device for receiving an MBMS. The method for sending indication information includes: UE determining that the UE has left one or more MBSFN areas which can carry a predetermined MBMS; the UE sending indication information to a network side. The method for receiving MBMS includes: UE receiving a specified MBMS which is carried in one or more MBSFN area to which a source cell where the UE is currently located belongs; after the UE performs cell reselection and resides in a target cell, in the case that one or more MBSFN areas to which the target cell belongs are different from one or more MBSFN areas to which the source cell belongs, the UE acquiring a condition of one or more MBMSs which are carried in the one or more MBSFN areas to which the target cell belongs; and the UE continuing receiving the specified MBMS in the target cell according to the acquired MBMS condition.

Abstract: A method and apparatus for testing a radio frequency index of an active antenna system are provided. In the method, a tested active antenna system is placed in a test cover for performing radio frequency index testing, wherein, the test cover includes an antenna array part and a passive network part, and the antenna array part and the antenna feeder part of the tested active antenna system are the same. The method for testing includes: monomer calibration of the test cover; near-field coupling calibration; and radio frequency index testing. With the above-mentioned method and apparatus for testing the radio frequency index of the active antenna system, the radio frequency index of the active antenna system can be directly and effectively measured without need of adding an extra test interface.

Abstract: Certain aspects of the present disclosure provide techniques and apparatuses for wireless communications. According to certain aspects, a set of protected resources, allocated to a base station of a first cell, that are protected by restricting transmissions of a second cell is determined and received power of a first reference signal from the base station in the set of resources is measured. According to certain aspects, a subset of one or more neighbor base stations that have reduced interference in a set of protected resources is determined and received power measurements for the subset of neighbor cells is excluded when calculating receive signal quality measurements for the subframe.

Abstract: Methods and apparatus are provided for assigning interference measurement resources. A method includes receiving at least one identifier, which determines, at least in part, at least one interference measurement resource that partially overlaps with another at least one interference measurement resource. The at least one interference measurement resource comprises a number of resource elements out of a set of resource elements. The method also includes measuring interference based at least in part on the at least one interference measurement resource.

Abstract: The present invention relates to a method and apparatus for efficiently controlling a minimization of drive test (MDT) in a plurality of public land mobile networks (PLMNs). The method for controlling an MDT of a terminal according to one embodiment of the present invention comprises the steps of: performing a tracking-area update; receiving a logged measurement configuration message; determining whether or not the received logged measurement configuration message comprises an MDT PLMN list; and a applying, if the MDT PLMN is comprised, the MDT PLMN list to the MDT. The method and apparatus according to the present invention may efficiently control an MDT in a plurality of PLMNs.

Abstract: Systems, apparatus and methods for crowdsourcing measurements of wireless base stations, access points and/or other transmitters from a mobile device to a server are presented. A crowdsourcing request sent by a server to a mobile device may comprise control parameters and measurement parameters. Control parameters may determine when a mobile obtains and reports measurements and measurement parameters may determine which types of measurements a mobile device obtains. Control parameters may comprise trigger parameters for crowdsourcing activation, measurement, reporting and duration. Crowdsourcing may be instigated by a control server and reported to a different data server. Crowdsourcing may be anonymous and may comprise basic or advanced reporting.

Abstract: A method includes transmitting, at a first time, a first transmission vector signal towards an antenna via a feeder cable connected to the antenna; receiving a first reflected vector signal, the first reflected vector signal being a reflection of the first transmission vector signal reflected from a point in the feeder cable; determining a first transformed transmission vector signal by performing a first vector forward transform on the first transmission vector signal; determining a first transformed reflected vector signal by performing a first vector forward transform on the first reflected vector signal; determining a first complex conjugate vector signal based on the first transmission vector signal and the first reflected vector signal; determining a first computed vector signal by performing a first vector inverse transform on the first complex conjugate vector signal; and determining a first sub-vector by performing a windowing function based on the first computed vector signal.

Abstract: An access point is provided that bridges a PAN with a LAN. When the access point receives, from a first mobile device, a request to authenticate with the access point for a first network service and a request to establish a second network service, wherein the second network service provides for bridging a PAN with a LAN, the access point determines a credential to be used by mobile devices who wish to join the second network service and, in response to determining that the first mobile device is authorized to make such a request, establishes the second network service. Further, in response to receiving, from a second mobile device, a request to join the second network service, which request includes the credential, the access point joins the second mobile device to the second network service and bridges traffic between the first and second mobile devices using the second network service.

Abstract: A communication method manages the allocation of Quality of Service using a communication network having an application server providing services and user equipment operated by subscriber The method also includes prioritizing a subscriber according to their subscription details for each service provided. The method also includes allocating Quality of Service for a service provided to user equipment according to the priority of a subscriber operating the respective user equipment.

Abstract: In systems and methods of determining a transmission order of packets in a wireless communication network, one method includes determining an efficiency of time frequency frame allocations performed by a network node over a predetermined period of time. The method also includes determining when the efficiency of the time frequency frame allocations is below a threshold. The method further includes rearranging two or more time frequency frames in one or more time transmission intervals when the efficiency of the time frequency frame allocations is determined to be below the threshold.

Abstract: A system comprising a processor of a communications device configured to monitor a network service usage activity of the communications device in network communication, classify the network service usage activity for differential network access control for protecting network capacity, and associate the network service usage activity with a network service usage control policy based on a classification of the network service usage activity to facilitate differential network access control for protecting network capacity; and a memory coupled to the processor and configured to provide the processor with instructions.

Abstract: In a wireless base station device, a PDCP buffer unit temporarily stores data sent from a core network device for the purpose of sending the data to a mobile station device. A data measurement unit measures the volume of data stored in a PDCP buffer unit. On the basis of a measurement value of the data volume measured by the data measurement unit, the congestion state determination unit determines whether or not the PDCP buffer unit is in a congestion state. In the core network device, a sending data storage unit stores data to be sent to the wireless base station device. On the basis of a result of the determination by the congestion state determination unit, a transmission/reception unit sends the data stored in the sending data storage unit to the wireless base station device. In this way, loss of data communicated between the communication devices is reduced.